Night Light of Hornsby (New South Wales) from space (Australia) Src. Average luminocity for 10x10km area is 51.5788% and for 50x50km: 41.5785%.
Square area 10x10 km:
 5.68%
 7.51%
 2.93%
 9.16%
 17.95%
 12.45%
 4.95%
 7.33%
 16.12%
 15.38%
 0.55%Square area 50x50 km:
 9.85%
 10.88%
 5.98%
 7.14%
 7.28%
 3.15%
 2.15%
 2.72%
 3.87%
 6.97%
 40.01%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
33° 6' 55.8" South, 150° 23' 46.3" East
33° 42' 8.8" South, 151° 5' 57.5" East
34° 17' 7.4" South, 151° 48' 8.8" East
Some cities around Hornsby sort by population:
• Cherrybrook
		5.4 km =3.4 mi, 
246°
• Wahroonga
		2.3 km =1.4 mi, 
139°
• Turramurra
		4.4 km =2.7 mi, 
141°
• Thornleigh
		3.8 km =2.4 mi, 
209°
• Pennant Hills
		4.7 km =2.9 mi, 
212°
• Mount Colah
		2.7 km =1.7 mi, 
37°
• Waitara
		1 km =0.6 mi, 
158°
• Normanhurst
		2.4 km =1.5 mi, 
187°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016